If you planning to travel to Frank Day Park, Lewistown, Montana, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 2:53 PM. The temperature feels like 5.55 with a humidity level of 86 so dress accordingly. Cloud coverage is 93 percent with visibility at 6 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 22 MPH. At the end of the day don’t miss the sunset at 12:06 AM.